Democrats have been outraged by 47 Senate Republicans ostentatiously trying to blow up negotiations with Iran with their "open letter" to Iranian leaders. But in terms of practical outcomes, the main drama still lies ahead.

Ukraine erupted in crisis during the past week, as Russia's Vladimir Putin essentially grabbed Crimea in his own hissy fit. President Obama, of course, has very limited options for dealing with Russia.

Elizabeth Warren is one of the most exciting and uplifting Democratic candidates in many years. Todd Akin and Richard Mourdock will leave a different legacy in this election: They dramatize the Republican problem with women, and the Republican problem with rape.